Sectional steam-generator.



Patented DBG. l2, |899. W. D. HXIE. SECTIDNAL STEAM GENERATOR. (Apucmon mea Apr. 24, 1899.)

ANrTnD STATES WILLIAM D. IIOXIE, OF NEW YORK, N. ,Y.,

ASSIGNOR TO THE BABCOOK t WILOOX COMPANY, OF SAME PLACE.

SECTIONAL STEAM-G EN ERATOR.

SPECIFICATION forming part of Letters Patent N o. 638,716, dated December 12, 1899.

Application led April 24, 1899. Serial No. 714,269. (No model.)

To @ZZ whom t may concern:

Be it known that I, VILLIAM D. IIOXIE, a citizen of the United States, residing at New York, borough of Brooklyn, in the county of Kings and State of New York, have invented a certain new and useful Improvement in SecL tional Steam-Generators, of which the following is a specification, reference being had therein to the accompanying drawing.

te This invention is particularly designed as an improvement in the type of generator referred to in Letters Patent granted to me December 2l, 1897, No. 595,852. In the patent referred to a water-tube generator is shown, with the water-tubes inclined at an obtuse angle with the front or Vertical face of the generator, thus increasing the capacity of the combustion-chamber of the furnace at its rear part. In the generator referred to in the patzo ent the products of combustion are permitted to pass from the furnace directly up and among the inclined water-tubes and adjacent to the drum to the escape-passage or uptake.

The object of the present invention is to utilize and control the expanding volume of the gases in the furnace combustion-chamber at its rear part by such disposition of the baffle or partition plates as to direct the course of the expanding gases to the chamber intermediate of the double series of tubes and among the water-tubes throughout their entire length from rear to front, all as hereinafter described.

In the accompanying drawing the figure represents a side elevation of the generator,

showing the disposition of the baiiies.

The relative arrangement of the main parts of the generator herein shown are substantiall y similar to the corresponding parts illus- 4o trated in the prior patent referred to, AA representing the headers, B theintermediate inclined water-tubes, O the furnace, and D the elevated steam and water drum. The inclined Water-tubes are also shown of different sizes, similar to those shown in the patent, the large tubes with larger intermediate spaces being located directly above the furnace.

In the present arrangement a greater space 5o a is designed between the inclined clusters of the different-sized water-tubes to provide a chamber for greater expansion of the prod# ucts of combustion and to locate the accumulation of ashes and dirt and facilitate their removal.

The bathe-plates are preferably arranged as shown in the drawing, the plate b at the top of the lower series of Water-tubes and at the bottom of the chamber a and extending from the front header partially over the fur- 66 nace forming a deecting-plate' for the products of combustion from beneath and an ashreceptacle from above. At the end of the plate b the baffle 7L is placed, extending upward at a right angle therewith across the chamber o and about half the depth of the upper cluster of inclined water-tubes. About midway of the chamber .formed by the plate b and the baffle 71. another baffle 7o is iixed, which depends from the top of the generatorV 7e and also extends about half the depth of the cluster of water-tubes. This arrangement of the baffles, as clearly illustrated, causes the products of combustion from the furnace to follow the course indicated by the arrows to the escape or uptake and by means of which the gases are thoroughly circulated throughout the chamber ct and among the inclined water-tubes, and by the increased distance they are required to travel their effective heat 8o is fully absorbed. This relative arrangement of the baffles is especially advantageous in association with the enlarged rear portion of the combustion chamber of the furnace, wherein a much greater degree of expansion of the gases takes place than in furnaces of ordinary construction and, further, in connection with the supplementary expansion-chamber a. This latter part of my invention also provides for the concentration of ashes and dust upon the inclined covering-plate b, from which they can be easily removed through a cleaning-door communicating therewith at the side of the generator.

Having thus fully described myinvention, 95 what I claim, and desire to secure by Letters Patent, is-

The combination in a sectional steam-generator of a double series of water-tubes both inclined downwardly toward the front of the generator and separated by an expandingchamber a, a bafiie b located at the top of the IOO lower series of Water-tubes and at the bottom I the generatorpartially across the Water-tubes, 1o of the chamber a, and extending from the 1 substantially as described.

front partiallyover the furnace formingade- In testimony whereof I affix my signature iiecting-plate for the products of combustion in presence of two witnesses.

,q 1 5 fiom beneath anu an ash receptacle flom \VILLIAM D. HOXIE above, a 'ba-ille h extending upward from the inner end of the baffle b across the chamber XVitnesses:

a and partially across the Water-tubes, and a CHAS. W. FORBES, succeeding baffle 7c depending from the top of GEORGE A. ROWELL. 

